Diameter of a Circle
| Diameter | cm 2 | in 2 | ft 2 |
| 40.0 cm | 1,257 | 194.8 | 1.353 |
| 40.1 cm | 1,263 | 195.8 | 1.359 |
| 40.2 cm | 1,269 | 196.7 | 1.366 |
| 40.3 cm | 1,276 | 197.7 | 1.373 |
How to find the area of a circle given its diameter?
How to find the area of any a circle given its diameter. The area of a circle with diameter of 40 is equal to 1257. See the solution steps here.
What is the length of a chord in a circle 40cm?
5 rows · Area of a Circle Formula. The area of a circle is pi times the square of its radius. The ...
What is the radius of the circle in △OAB?
A circle of radius = 40 or diameter = 80 or circumference = 251.3 cm has an area of: 5.027E-7 square kilometers (km²) 0.5027 square meters (m²) 5027 square centimeters (cm²) 502700 square millimeters (mm²) 1.94094E-7 square miles (mi²)
How do you find the area of a cricle?
Mar 11, 2022 · The radius of a circle calculator uses the following area of a circle formula: Area of a circle = π * r 2. Area of a circle diameter. The diameter of a circle calculator uses the following equation: Area of a circle = π * (d/2) 2. Where: π is approximately equal to 3.14. It doesn't matter whether you want to find the area of a circle using diameter or radius - you'll …
What is the area of 40 cm circle?
Q. What is the area of a circle with a radius of 40cm? Hence, area of the circle = 5024 cm square. Hope it helps.
What is the diameter of a 40cm circle?
1 Answer. The diameter is 12.74.
How do you measure 40cm diameter?
0:401:21How To Take A Diameter Measurement - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd I'm using a soft ended tape measure. And I look at where the end of the tape measure is meetingMoreAnd I'm using a soft ended tape measure. And I look at where the end of the tape measure is meeting here and that's the diameter which is the measurement I'll use to make the cushion. Cover.
How do you calculate area with diameter?
Answers. 1. The formula for the area A as a function of the diameter d of a circle is given by A = π (d/2)^2.
What is the area of 40 diameter?
The area of a circle is equal to π⋅r2 . If your diameter is 40m, then your radius must be 20m, as the radius of a circle is always half of the diameter. With this equation, you need to multiply π by 202 . Since 202=400 , your equation will be π⋅400 , or π400 .
What is the circumference of a 40cm diameter?
Circles (basic)DiameterCircumference(approx)Circumference20 cm60 cm62.8cm40 cm120 cm125.6cm3m9m9.42m5 cm15.7 cm15.7cm2 more rows
What is the area of a 50 diameter circle?
SF=π(50 ft)²=7854 ft² . Now you know how to figure the square footage of a circle.
How do you find diameter of a circle?
2 x radiusCircle / Diameter
What is the area of the diameter is 14?
The area of the circle is 154 square feet.
How do you measure the area of a circle?
0:041:39Area of a Circle | MathHelp.com - YouTubeYouTubeStart of suggested clipEnd of suggested clipThe formula for the area of a circle is area equals pi times radius squared.MoreThe formula for the area of a circle is area equals pi times radius squared.
How can I calculate area?
0:231:54Learn how to calculate the area of a square and rectangle. Math lesson ...YouTubeStart of suggested clipEnd of suggested clipSo the length times the width. Area equals 3 times 3 and the area equals 9 units they're squareMoreSo the length times the width. Area equals 3 times 3 and the area equals 9 units they're square units or nine square units okay to find this one.
How do you find the area of a part of a circle?
The formula for sector area is simple - multiply the central angle by the radius squared, and divide by 2: Sector Area = r² * α / 2.
How to calculate the area of a circle? Area of a circle formula
So, let's see how to find the area of a circle. There are several ways to achieve it. Here, we can calculate the area of a circle using a diameter or using a radius.
How to use the area of a circle calculator? Diameter to area and radius to area
You can easily calculate everything, the area of a circle, its diameter, and its radius, using our area of a circle calculator in a blink of an eye:
Why do we need the surface area of a circle calculators?
The circle's area found with both the radius and diameter calculators serves as a base for many other equations - not only in mathematics but also in everyday life! Here are a few examples where knowing how to find the area of a circle might be useful:
Why are circles important?
Circles are used when planning athletic tracks, recreational areas, buildings, and roundabouts, so knowing their area is important in construction, landscaping, etc. The famous Ferris-wheel attraction is a circle, as are the wheels on your car or bike.
How to write area of a circle?
The formula for the area of a circle is π x radius2, but the diameter of the circle is d = 2 x r 2, so another way to write it is π x (diameter / 2)2. Visual on the figure below: